Improvement in sawing-machines



UNITED STATES PATENT OFFICE..

N. B. BALDWIN, OF GEOBGE'IOWN,

ILLINOIS.

IMPROVEMENT lN SAWlNG-MACHINES.

To all 'whom t may concern:

BeitknowntliatI,N.B.BAl.Dw1N,ofGreorgetown, in the county of Vermillion and State of Illinois, have invented a new and useful Iniprovement in sawing-Machines; and I do hereby declare that thefollowing is afull,clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part ot this specification, in which- Figure 1 is a side sectional view of my invention, taken in the line a; 00, Fig. .2 5 Fig. 2, a plan or top view ofthe same.

Similar letters of reference indicate corre spending parts.

rIhis invention relates to a new andiniproved sawing-machine for sawing wood transversely with the grain, and is designed for sawing logs into proper lengths for cord or lire wood, and also into lumber.

The invention consists in a novel construetion and arrangement of the saw-frame, and in the application ot' springs to the saw for feeding the latter to its work.

A represents a rectangular training, on the upper parallel side pieces, a a, ot' which two bars, B B, rest transversely and ai e allowed to slide freely back and forth thereon, said bars being retained iii position by pins b passing through them near their ends and extending down at the outer sides of the side pieces, a a,

and by bars c c, which extend over the tops of the bars A A longitudinally with the side pieces, a a.

Each bar B has a pendant, C, framed into it at its center, and to those pendants the sawframe D is secured, the same consisting of a single bar bent in semicircular forin at one end,

as shown at d, said end d being connectedu by a pitman, E, to a crank, F, on a driving-shaft,

G, having a crank-wheel, H, at one end and a lywheel,I,atthe other end. The upperstraight horizontal part of this saw-framehas twopendent rods, J attached to it, one of which, J, has its lower part extending throu gh the lower bent part, d, of the saw-frame, and is held tirmly by a nut, c, while the other rod, J', is braced by a rod, f, from the end ofthe upper part ofthe saw-frame, as shown in Fig. 1.

K is the saw, provided at each end with an eye or socket, g, through which the rods J J pass loosely, said rods having a vertical position and being parallel with each other, and

having upon thein spiral springs L, which bear upon the eyes or sockets ot' the saw and have a tendency to press the same downward to its work.

The crank-shaft Gr may be turned by li and or other power, the log being placed under the saw transversely therewith, a reciprocating inotion being givin g the sawfrarne and saw through the inediurn of the crank and pitinan.

The saw is kept to its work by the springs, and is thereby made to cut as i'ast at itis capable, while the saw-frame, in consequence of heing constructed as described, is inade to run steady and. to cause the saw to work without springing or bending, thereby avoiding the kinking and breaking of saws.

The framing may be provided with wheels or casters M at its lower end for the convenience of transporting it from place to place.

The device may be cheaply constructed and kept in perfect iunniiig order by any one of ordinary ability.

I claim as new and desire to secure by Letters PatentlThe combination of the guide-rods J J' and springs L L with the saw K and frame D, as and for the purposes speciiied.

NATHANIEL B. BALDWIN.

Witnesses:

THEoDoEE H. WEsT, J osErH BAILEY. 

